Question

Can p^3 - 3p^2 + 5p - 15 be factored?

Answer 1

my guess is no.

Answer 2

put x=3, check it would be the zero :)

Answer 3

but you can't factor anything correct?

Answer 4

i u put x=3, gives 3^3-3(3)^2+5(3)-15=27-27+15-15=0
it means one of the factor of that polynomial is (x-3)
so, this can be factored :)

Answer 5

* if

Answer 6

how did you figure 3?

Answer 7

i have used by trials, first :)

Answer 8

another way, u can use wolfram to check it
http://www.wolframalpha.com/input/?i=x^3-3x^2%2B5x-15